ABB Relion 670 Series Applications Manual page 396

Section 14
Control
14.5.3 Setting guidelines
14.5.3.1 TR1ATCC or TR8ATCC general settings
Common base IED values for the primary current (
SBase ) are set in global base values for settings function GBASVAL.
power (
GlobalBaseSel1 : Used to select a GBASVAL function for reference of base values for winding 1 (HV).
GlobalBaseSel2 : Used to select a GBASVAL function for reference of base values for winding 2 (LV).
TrfId : The transformer identity is used to identify transformer individuals in a parallel group. Thus,
transformers that can be part of the same parallel group must have unique identities. Moreover, all
transformers that communicate over the same horizontal communication (GOOSE) must have
unique identities.
Xr2 : The reactance of the transformer in primary ohms referred to the LV side.
tAutoMSF : Time delay set in a follower for execution of a raise or lower command given from a
master. This feature can be used when a parallel group is controlled in the master-follower mode,
follow tap, and it is individually set for each follower, which means that different time delays can
be used in the different followers in order to avoid simultaneous tapping if this is wanted. It shall
be observed that it is not applicable in the follow command mode.
OperationAdapt : This setting enables or disables adapt mode for parallel control with the
circulating current method or the master-follower method.
MFMode : Selection of Follow Command or Follow Tap in the master-follower mode.
CircCurrBk : Selection of action to be taken in case the circulating current exceeds CircCurrLimit.
CmdErrBk : Selection of action to be taken in case the feedback from the tap changer has resulted
in command error.
OCBk : Selection of action to be taken in case any of the three phase currents on the HV-side has
exceeded
MFPosDiffBk : Selection of action to be taken in case the tap difference between a follower and the
master is greater than
OVPartBk : Selection of action to be taken in case the busbar voltage V
RevActPartBk : Selection of action to be taken in case Reverse Action has been activated.
TapChgBk : Selection of action to be taken in case a Tap Changer Error has been identified.
TapPosBk : Selection of action to be taken in case of Tap Position Error, or if the tap changer has
reached an end position.
UVBk : Selection of action to be taken in case the busbar voltage V
390
If the Follow Tap mode has been selected, then the
higher value than the set value of the
functions.
Iblock .
MFPosDiffLim .
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IBase ), primary voltage ( VBase ) and primary
tAutoMSF must be set to a
tStable timer in TCMYLTC/TCLYLTC
exceeds
B
falls below
B
1MRK 511 401-UUS F
SEMOD171503-1 v1
SEMOD171501-4 v5
Vmax .
Vblock .
Bay control REC670
Application manual